Band-aid patch to get puppet running again on labs.

Currently the ganglia config depends on a fact (projectgid.rb)
which itself depends on the resolution of the ganglia manifest.

That was causing a failure due to an undefined variable.  Now
I just define that var to 'TBD' in order to allow the first pass
to complete.  Subsequent passes insert proper values.

Clearly this needs a better fix, but this patch should get labs
working again in the meantime.

Change-Id: Ic0edf12d6ce63ce13669beb72da867a70781ccc2
Merge "Band-aid patch to get puppet running again on labs." into production